/Engine/Plugins/MeshPainting/Source/MeshPaintingToolset/Public/MeshPaintHelpers.h
Applies vertex color painting found on LOD 0 to all lower LODs.
void ApplyVertexColorsToAllLODs ( [IMeshPaintComponentAdapter](API\Plugins\MeshPaintingToolset\IMeshPaintComponentAdapter) & GeometryInfo, [UMeshComponent](API\Runtime\Engine\Components\UMeshComponent) * InMeshComponent )